hmmm, that sucks man. Not sure what that thing is all about. One would think that it would make sense for the 22" to fit on the drivers side for better coverage. But I'll learn from your mistakes and I'll get OEM blades when I swap mine.
I hate the e46 wipers by the way, my rain sensors make them come on automatically when theres only a couple drops, and the passenger side one always skips and chops on its way down. It sounds terrible too.